Penjelasan dengan langkah-langkah:

ULANGAN

6. tidak ada di pilihan

(f o g)(x) = (x – 1)² – 2(x – 1)

(f o g)(10) = (10 – 1)² – 2(10 – 1)

(f o g)(10) = 9² – 2 × 9

(f o g)(10) = 7 × 9

(f o g)(10) = 63

7. tidak ada di pilihan

(g o f)(x) = g(2x + 1)

(g o f)(x) = 2x + 1 – 2

(g o f)(x) = 2x – 1

8. B

f(x) = 3x – 5

3x = f(x) + 5

x = f(x) + 5

3

f-¹(x) = x + 5

3

9. C

f(x) = 5x + 1

f-¹(x) = x – 1

5

f-¹(6) = 6 – 1

5

f-¹(6) = 5

5

f-¹(6) = 1

10. B

g(x) = 2x – 6

2x = g(x) + 6

x = g(x) + 6

2

f-¹(x) = x + 6

2

11. D

(7/6)π rad

= 7/6 × 180°

= 7 × 180°/6

= 7 × 30°

= 210°